NILFS (loop4): nilfs_get_block (ino=16): a race condition while inserting a data block at offset=7
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2765!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 32039 Comm: syz-executor.4 Not tainted 6.8.0-rc7-syzkaller-00142-g3aaa8ce7a335 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:submit_bh_wbc+0x517/0x540 fs/buffer.c:2765
Code: 6b 7e ff be 00 10 00 00 48 c7 c7 40 91 26 8e 4c 89 ea e8 cc e4 bb 02 e9 b1 fe ff ff e8 d2 6b 7e ff 90 0f 0b e8 ca 6b 7e ff 90 <0f> 0b e8 c2 6b 7e ff 90 0f 0b e8 ba 6b 7e ff 90 0f 0b e8 b2 6b 7e
RSP: 0018:ffffc900047df338 EFLAGS: 00010287
RAX: ffffffff82150236 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90009a71000 RSI: 0000000000016795 RDI: 0000000000016796
RBP: 0000000000000000 R08: ffffffff8214fdc4 R09: 1ffff11008ce3e74
R10: dffffc0000000000 R11: ffffed1008ce3e75 R12: ffff88804671f3a0
R13: 1ffff11008ce3e74 R14: 0000000000000000 R15: 0000000000001000
FS:  00007f54661a56c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055efd4dd6858 CR3: 0000000030724000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 submit_bh fs/buffer.c:2805 [inline]
 __bh_read fs/buffer.c:3070 [inline]
 bh_read_nowait include/linux/buffer_head.h:417 [inline]
 __block_write_begin_int+0x12ce/0x1a70 fs/buffer.c:2132
 __block_write_begin fs/buffer.c:2152 [inline]
 block_write_begin+0x9b/0x1e0 fs/buffer.c:2211
 nilfs_write_begin+0xa0/0x110 fs/nilfs2/inode.c:262
 generic_perform_write+0x321/0x640 mm/filemap.c:3930
 __generic_file_write_iter+0x1b8/0x230 mm/filemap.c:4022
 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4051
 call_write_iter include/linux/fs.h:2087 [inline]
 iter_file_splice_write+0xbd6/0x14e0 fs/splice.c:743
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x11e/0x220 fs/splice.c:1164
 splice_direct_to_actor+0x58d/0xc80 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
 do_sendfile+0x56d/0xdc0 fs/read_write.c:1295
 __do_sys_sendfile64 fs/read_write.c:1362 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f546547dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f54661a50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f54655ac050 RCX: 00007f546547dda9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007f54654ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 000000002a76cddc R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f54655ac050 R15: 00007fffb86e8ca8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x517/0x540 fs/buffer.c:2765
Code: 6b 7e ff be 00 10 00 00 48 c7 c7 40 91 26 8e 4c 89 ea e8 cc e4 bb 02 e9 b1 fe ff ff e8 d2 6b 7e ff 90 0f 0b e8 ca 6b 7e ff 90 <0f> 0b e8 c2 6b 7e ff 90 0f 0b e8 ba 6b 7e ff 90 0f 0b e8 b2 6b 7e
RSP: 0018:ffffc900047df338 EFLAGS: 00010287
RAX: ffffffff82150236 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90009a71000 RSI: 0000000000016795 RDI: 0000000000016796
RBP: 0000000000000000 R08: ffffffff8214fdc4 R09: 1ffff11008ce3e74
R10: dffffc0000000000 R11: ffffed1008ce3e75 R12: ffff88804671f3a0
R13: 1ffff11008ce3e74 R14: 0000000000000000 R15: 0000000000001000
FS:  00007f54661a56c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555f9a788 CR3: 0000000030724000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400